diff --git a/isisd/README b/isisd/README
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+Modified files in the ZEBRA-0.92a package.
+
+ ../configure.in
+ ../Makefile.am
+ ../acconfig.h
+ ../lib/log.h
+ ../lib/memory.h
+ ../lib/vty.c
+   - case ISIS_NODE:
+ ../lib/command.c
+   - case ISIS_NODE:
+ ../lib/command.h
+   - ISIS_NODE,                    /* IS-IS protocol mode */
+   - str #definitions
+
+
+Constraints
+
+  o Maximum number of interfaces 255
+